Valve-grinding tool



J. ORAWIEC VALVE GRINDING TOOL Filed Apr il f20, 1925 2 Sheets-Sheet 1 u nu n1 mun gwuentoz rections, while moving the hand grip, in the T same direction, whereby to. impart thefde v 2o *which is-adapted "for vertical-5disposition' at the top which is connected with andfro v p I wise to accomplish the purposeispecified, it

Patented is 6. 5

. JOHN oRAw-Iiio,oF oHIcAGqInLINoIs.'*

r jvALvE-emammmou.

Application filed Ashram), .1925. ser al No. 24,430.

thereofagainst its seat,

Briefly, the invention comprises a've rtically disposed shaft, on the, upper end of which is a swivelly mounted handle, novel adjustable and "efiicientvalve engaging means being located at the lower end of the gure 7 isfa side oredge 'el-evati'on 'of V shaft. Slidable upon the intermediate portion. of the. shaft 'is' a hand grip,-which is made in a'special 'mannerlfor cooperatingwith the especially, constructed shaftto alternately. rotate the'sha'i't in opposite sired oscillatory movement to the valve. One feature of the invention is the handle tatable upon the-upper end of the shaft.

Another feature" is the valve engaging means which includes apair of adjustable pointed legs'to rest upon the cylinderxblock,

togetherwith means for yieldably connect ing Qthe'se legs with the; shaft, whereby .to

permit the valve to'be'held against the seat, under yieldable pressure.

The valve engaging means also; specific-j ally"inc ludes',a "screw driver blade, and a wrench sockets. I V V e a [A no'less important feature of-the 'invention is thespecific construction of theslidable hand grip, which is provided with .practic al means forl cooperat-ion with the es'pe-, cially constructedshaft for alternately rotatg the s'haft'in'opposite directions without a break,and while moving the'handgri'p the. samedirection, whereby to permit jthe hand grip totransverse the shaft fronrsubstantially oneend to the'other.

Numerous otherf features Wlll become ap parent from the following description and,

fastened,theferruleextending beyond the' end of the; knob and serving to housethe 9, one'end {flange of. which: bears againstfthestop collar 10, and the other end .7 flange ot'which rests uponthe ballrace l 1'. ,The'handle'is' thus swivell'y mounted'upon V theshaft and permitslfree rotation of the drawings.

I a In the accompanyingdrawing,"forming part of thispappli'c'ation, andinlwhich like numerals f arefemployed to designate like parts throughout thesame. I ,Figure lgis a 'sile elevation ofatool, const'ructedin accordance'witlr'the present in- Figure through the hand grip;

' the screw driver used in Figurefi. 5 p Referring to the drawingsi'n ,detail, the

reference character :1 designates a' shaft I i e shaft. j; a f sectional and elevational' Figure 3 is a central vertical 'F'gure 4 is atransverse section, takenfapproiiimatel Figurefiis an enlarged elevational view of blade and spanner socket Fi ure' 6."

{1gure'8 isa'per'spectiveview of a keeper While this shaftcould be"constructedotherthese ribs'extend substantially from onefend to l the other of theTshaft; Especial attehtion is directed to; the factthat-the-ribs are twisted s'pirally, but the direction of twist iew of the" lower portion of the shaft and the va'lve'engaging means. j section y upon the plane O'f'thQliIidA-f-t of Figure Figure 5 isadetail sectionaland elevational 'view'of the handle at the top ofifthej shaft. '65 f of the, spiral v is --r eversed, at "equi-distant longitudinally spaced 1 points. 1 Observing special contriva'nce @for 'usefi'vith spanner V p the spiral twist, startingat'lth'etopycon; .tinuesinone direction to the point indi{ cated at, 4. Atthis point, the directionof Figure l, for instance," it willbe' seen that twi'st' is, reversed, and eiitends to aboutthe point 5, where it reversesand tra'vels'inthe,f

first named direction. Thef ribs are so reversed as to cause the ipoint's'at the. junc-f ture,-as att'and 5,,t0 mergeinto each other-Q thefupperend ofthe shaftis a handle I x I a Wooden knob ;7 ,"t'of which a ferrule ,8 is

i ie a, wi i b en* ill 7 that a sleeve 12 is riveted upon the lower end of the shaft; and this sleeve isuprovlded,

diametrically opposite points with guide slots 13. Telescoping into the sleeve is the shank of a screw driver blade 14r',"IWl11'ClT-Carr-16813 cross pin 15 sliding in the slot. ,I'nterposed driver blade. It will be noted that thezlowerend offtheblade'is widened andshaped for,

reception in theusualvkert in the top of the Valve 3 In orderto suppert the sleeve above thecylinder bl ock,l provi dejia pair of point ed -l'egs i117; tlie. up,per ends, Of 'WhlfOhY are threaded through'a c'ros's head 183'and are adjustabl-y clamped thereto,- loy nuts'iiiclu ding a ,ball race This allows free-rotation" of the sleeve with jrespecjt to thfl leg support ed 'cross'headf Inasmuch as -soine valve V cheads are provided vith spanner wrench socketsfinsteacl' o'f the usual"s'crewrdriver 24"; The particular construction of thekeep;

er will belapparent fron Fignre'S; Under the arrangement shown, thear ns 23'1nay be spreadginto-'diver 'ing relation for reception j inspa nner; wrench 1 holes of different distances ap art,lan dLthey Willjbe-held"hy the keeper; Also, t heen tire contrivance 21 can;

bejreniove'd from thescrew driver blade and reversed with-the arms 23 disposed upwardlyi an d held" tighfily ag inst-theiscrew driver j blade; in an; out of the way jpositiion, when the screw driver; blade 1s used alone A nove'l detail, no w to hefcons deredyls shown inFigures?) andtj more-particularly? 1 ,ITlli si detail "is fthdslidifigjhztnd grip, indi-f cttedby the e ee e haracter 25.; This hand grip comprises an outer cylindrical casing 26, provided with "internal washers 7 27, at, its opposite ends; 5 7 Disposed at the H centerjof'thecasingis a casting inadejup of sections 28, fhavin'g;theirjmeeting faces recessed to provide; {on anti friction roller p gs 29; As shown from Figure 4, these roller bearn gs are disposed to engage op-fl posedbevelledsides of the ribs. 2 and-3, of.

l the rhoinhdidalsha ftf Some little clearance is provided between the peripheral portion of the casting sections and'the Walljofth'e "casing; Also a pair of open ended cylinders 30 are" itastenechat their inner ends to the sec= tions, an d have theirouter end-aportions slidg able thr'ough the washers 271 and open ends of the casing 26.. Coiled springs 31'Jarein-Jv terposed between the casting sections and "the washers, Also,in one side, the casing 26 istormed with a vertically'elongated s10t32,

screw threaded j legs stra'ddlel tlie jholefanfld 5 rest directly on the top surfa'cefoif'lthe "CYliiT-L der blocks. In this connection, the lengths ing thl thumb Ln'uts" v19, Connected to "the Q center ol this'cross head is a bearing include 7 screws projecting "into the; aforesaid 'slots"1a. f

handle-6 is now graspedfand ,doi'vnwardlyf Q will be.v seen that owingto'thejreversetwis l to the unusual Tdispositionfof the spiral ribs;

7 sections; it is made asjshown in'Fig'u're 'being -lini-itedbythe stop pins 33 ;engag iiig the oppositever'tical edges of the slats-32.

and thecastingcarriesa stop pin 33, which; I

is movable' 'in this sloti Inasm'uclr as? this .pin moves crosswise of the slot" under the'ac-' tionof the casting, acting upon the spiral ri b s,ithe-.=-saine isr-preferably covered by an annular band 34, to prevent injury to the of thelegs may bevarie'd', so that the spring pressure of "the screw driver blades 14 may) be varied. ltnvi'llbe noted that the cross head 18 and hearings are 'held 'in' place'byfa nut, and' are heldTagainst rotation: :by't

If the valve head "has "ascrew driver kerf andspannerl s0cl t, tl ie lower widened end of the. sores-"driver blade isi'nse'rte'd into the lzeri while-the inwardly directed nd'sof'the' "arms of the device 21 are seated in" the [spanner socket, and held H1 pl2tCQbfiPlTOpBr 1y adjusting thelzeeper 24. Tlfthereare no' spanner sockets presenuthe;dev1ce"21 may J be moved upjon the'scr'e'w 'dri verfto' dispose" it out of the way, temporarily for instance, as indicated [111 F1 gufre '1 {the knobj'on pressure is exertedupon the shaft-*1, pressing the screwdriver ibl ade into yielding "en-a f gagem'ent with" the 7valve. It has been" authoritatively said that about three' 'poun'ds of pressure upon ,the valvei is "encee'din'gly efllcient, and for this reason I'hav'e provided I graduation?) along the on one" side of the sleeve 12 and the; cross-pin 'leigse'rves pointer for co-actingtherewith;l'to indicate the pressure exerted; '1 Now, by grasping thev sliding hand grip 25; fand linovi ng' git from of the ribs, the shaft will-be. alternatel yfro tated .in opposite" directions to impart the;

, desired oscillating nioti'onto the' valve'. In;

this connection, it i'vill leeobvious thatfowing Q 1 structed in' one piece; bind andfproba bly cause the breakage In order toperini't the necessaryfrelative 'inovemenfbetween' th'e ally practical and successful. It is of course 7 obvious that the reverse action is also given;

to the shaft, when the hand grip is moved upwardly. A continued downward pressure, from one end of the spiral to'theo-ther,

however, serves as an effective means for accurately grinding valves. Inasmuch as the several features 'and advantages of the invention have doubtless been made apparent by the description and drawings, a more lengthy description'will not be entered;

may be resorted to, if desired. p

I claim: 1. In a valvetgrinder,

2. In a valve' grinding tool, a shaft having spiral ribs extending substantially from one ing, a sleeve yieldably supported within the end to the other end thereof, the twist of the ribs being reversed at predetermined longiv tudinal spaced points, a valve engaging means carried by the lower end of the shaft,; a handle on the upper end of the shaft, a

hand grip slidable on the ribbed portion of the shaft, the same including an outer casa spiral shaft, a valve engaging means carried by the'lower end of the shaft, a handle on the upper end casing, and 7 anti-friction rollers carried by the sleeve and cooperating with the spiral I ribs for alternately rotating the shaft in op 'posite directions during'the sliding movement of the hand grip on the shaft from 1 one end-thereof to the otherend.

3.. In a valve grinder, a spiral shaft, a valve engaging means carried by the'lower;

end of the shaft, a handle on the upper end of theshaft, means for effecting the oscilcomprisinglafhand grip slidable on the spithe casing,fantifriction rollers carried by the sleeve and co-operating with the spiral shaft, andicooperative means between the :sleeve and the outer casing for limitingthe 1 rotation of said sleeve with respect vto the casing and the shaft.

41111 a valve grinder,ja spiral shaft, a valve engaging means carried by the lower end of the shaft, a handle on the upper end of the shaft, meansfor effecting the oscillatory movement of said shaft, said means comprising a hand grip slidable Ion the spiral shaft,"said hand grip including an outer casing, a member yieldably supported within the casing, anti friction rollers carried by the memberand cooperating with which the free end of said pin projects.

In testimony ture. r

JOHN OItAWIEC.

whereof I affix my signa 'latorymovement /of said shaft, saidrmeans V ral shaft, saidhand grip including an'outercasing, asleeve yieldably supported within 7 While thepreferred embodiment of theinvention has been shown and described, it is to be understood that minor changes coming within the field of invention claimed casing being provided with a slotthrough 

